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Different Brake boosters and brake systems 90 740T vs 89 740gle 700

posted by  Will740turbo on  Fri Nov 11 12:29 CST 2016
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last visit: Wed Oct 22 16:09 CST 2014
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Hey everybody.

I'm looking at this GLE 740. It's an 89, and has ABS, but has this very skinny booster, unlike my 90 with a very deep booster.

I know my 90 has ABS, 8" around "deeper" booster, big rotors, and calipers so big that 15" wheels won't mount to the front.

I didn't look at the calipers on the 89, but I believe it has a set of 15" alloy wheels on it, which means smaller calipers and rotors. The booster is also a very skinny kind.

The brakes are spongy as can be, to the point I'd rather not drive it across town to get it home. Step 1 is of course flushing fluid, failing that I'd swap the Master Cylinder and booster from my wrecked 740T.


Why were there two different booster/caliper setups in two cars a model-year apart that both had ABS? Are they interchangeable?

Cheers!






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New Different Brake boosters and brake systems 90 740T vs 89 740gle [700]
posted by  Will740turbo subscriber  on Fri Nov 11 12:29 CST 2016 >


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